A series of abstract, silly sculptures represent the works of a great modern classical composer.

Climb inside an iron crystal magnified 165 billion times its normal size.

From motorcycles to firetrucks and sports cars to horse-drawn carriages, this Belgian collection goes beyond rare cars.

A little sculpture with a large wardrobe.

The original shop where the iconic Belgian praline was invented.

Cozy basement bar sports an inventory of over 2,000 beers.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

This memorial museum chronicles the apocalyptic destruction of the First World War.

A moving memorial to the fallen and missing from WWI trenches.

An abandoned train station in Munich constructed for the 1972 Olympic games.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

The "Prussian Versailles" that is as glorious today as when it was built.

A restaurant and observation deck built in a unique broadcasting antenna.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

Metro station with a claim to rock n' roll fame.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This watchtower once presided over the Berlin Wall.

The largest stretch of the Berlin Wall is right on top of the former SS headquarters

Thousands of coffin-like pillars make up this controversial Holocaust memorial.